Magnetic separator.



A. & M. DINGS.

MAGNETIC SEPABATOR. APPLIOATIOK IIILED MARJB, 1905.

Patented Feb. 14, 1911.

lNVENTORS 1%" W i ATTORNE)? W/TNESISES/I UNITED- s'rAns P Ail VIN DINGSAND MYRON DINGS, OF MILWAUKEE, WISCONSIN, ASSIGNORS TO DINGSELECTRIC-MAGNETIC SEPARATOR 00., OF MILWAUKEE, WISCONSIN, CORPORA- 'iIONor WISCONSIN.

MAGNETIC SEPARATOR.

Specification of Letters I'atent. Patented Feb. 14 1911.

Application filed March 16,

1905. Serial No. 250,349.

To all whom it may concern: I

Be it known that we, ALVIN DINGS and MYnoN DINGS, citizens of the UnitedStates,

larity reversed in passing from one magnetic field to another, thusremoving all residual magnetism; 2nd, to provide means whereby pieces ofmagnetite'of irregular shape and size may be removed from a slide bymeans of magnets traveling over the surface of such slide and suchremoval accomplished without'clogging the machinery, or injuring theslide or magnets; 3rd, to provide means for increasing the intensity ofthe magnetic field through an auxiliary magnet, located on the otherside of the slide from that of the magnets which carry the material;4th, to provide means for effectively distributingthe magnetite on thesurface of the slide underneath the magnetic carriers; 5th, ,0 providemeans whereby the intensity of the magnetic field may be varied bychanging the path 'of the current in the magnetic windings.

In the following description reference is had to the accompanyingdrawings, in which Figure 1 is a plan view of a portion of the slide,the stationary magnet and the magnetic.

, carrier, provided with auxiliary-magnets,to-

gether with the switch board used for varying the intensity of themagnetic field. Fig. 2 is a side view of our invention,the switch boardbeing omitted.

erably located at the discharge opening of the hopper, wherebya uniformfeed of material from the hopper to the slide is secured. The slide issuspended from a frame 6 by means of hanger-bars 7 and a platform 8 uponwhich the slide is mounted, with interposed rollers 9, which permit alongitudinal movement of the slide without material friction. Motion istransmitted to the slide from any suitable source of power through themedium of a shaft 10, pulley 13, belt 14 and pulley 15, shaft 16,eccentric 17 and a pitman bar 18, the latter having jointed connectionwith the slide at 19. Motion is transmitted to theroller 3 fromthe belt14:

by means of a pulley 11 mounted on'said roller.

A platform 8 is loosely mounted on the rods and is supported from therods' by springs 20, interposed between the nuts 21 and the platformwhich permit it to move vertically on the rods 7. The rods themselvesmay be vertically adjusted in the frame 6 by means of thumb nuts 23. 'Astationary magnet, preferably having two cores 25 and 26 is supportedfrom the frame by means of hanger-bars 28.

This magnet is provlded wlth segmental polar extremities '29 and 30respectively, the ends of the pole pieces being rounded off as indicatedat '31.

A. non-magnetic carrier 33, preferably in the form of a disk, issupported from the frame by means of a driving shaft 34:, to whichmotion is communicated from the shaft 10 by means of the gear wheels 35and 36. Auxiliary magnets 40 are mounted on the disk 33 and extendthrough apertures in the disk, the lower ends of the auxiliary -magnetsbeing in close proximity to the surface of the slide 2. The upper endsof the paths of the auxiliary magnets and strips These marof flexiblematerial 46, preferably of rubber or leather are substituted therefor,whereby the larger, pieces of magnetite may be carried from the slide bythe auxiliary magnets, for the flexible strips 46 will yield to permitthe passage of the magnetite.

The slide 2 is caused to vibrate vertically by means of an elbow lever50 pivoted at 51 to the under surface of the slide and having one armloosely engaged in a bearing at 52. The other arm of the elbow lever isprovided with a resilient cushion 53, preferably of rubber, which issupported by the arm of the lever 50 in a position to strike the undersurface of the slide, when the elbow lever is. actuatedby thelongitudinal vibratory slide movement.

the hopper 1' to the slide and passes down along the slide, upon whichit becomes thoroughly distributed before reaching the .magnetic field,where the auxiliary mag-.

nets e0 collect the'magnetite and carry it laterally from the surface ofthe slide, where it is discharged in .aneutral zone between the polepieces 29 and 30. The non-magnetic material passes on down the slide toa receiving bin 58. The slide is of non-magnetic material. The platform8 is preferably of magnetic material whereby the intensity of themagnetic field through which the material passes is increased. Themagnetic wire is wound in sections and the 2 cores or coils 25 and 26 sowound that their adjacent ends are of the same polarity. The terminalsof the windings are connected to clips a to a inclusive on theswitch-panel 61.

The clips are electrically connected as shown by dotted lines in-Fig. 1.

62 is aservice switchfor closing an electrical circuit through themagnet coils;-

7 while 63 is a controlling switch or regulating the path of theelectrical current through the coils to-va'ry the intensity of themagnetic field. The switch 63 is slidingly connected with the rod 64alon which the switch maybe swung into an out of contact withthe clips.The switch 63 is of non-' conducting material, but is provided withcontact blades 65, 66, 67, 6-8 and 69 of copper or other suitableconducting material as shown. This switch is in the form of a fork withthe contact blades 65, 66 and 67 on one arm and the blades 68 and 69 onthe other arm. The switch 63 is adjusted in three positionsalong the rod64, these positions being indicated at A, B, and C. When.

the switch is at A, if swu'ngto circuit closing position, the blades 68and 69 will not A spring connects the downwardly extending arm of be incontact with any of the clips. The blades 65, 66 and 67 will contactwith clips at a, b, 0, d, e and f. The blade will conswitch 63 isat B,if swung to circuit closing position, the blade 65 will connect clips atg and h. The blade. 66 will connect the similar clips at 2' and j andthe blade 67 will connect the clips at is and Z. The blade 68 willconnectthe clips at m and n and the blade 69 will connect the clips at 0and p. The effect of these connections will be to place the coils ofeach. magnet core 25. and 26 in series, while the res ctive legs will beconnected in parallel. ien the switch 63 is at C, if adjusted to circuitclosing position, the blade 65 will connect the clips at g and r. Theclip at s is back-connected with 1' as indicated by dotted lines, andthe blade 66 will connect the clip at s with the clip at t, the latterclip being backconnected with the clip u as indicated by dotted lines.The blade 67 connects the clip at u with the clip at o. The blade 68connects the clip at 10 with the clip at m, the

latter being back-connected with-the clip at m. The blade 69 connectsthe clip'at-m' with the clip at y and 2, the latter beingbackconnectedwith the return circuit wire lead ing to the switch 62 as indicated bydotted lines. When the switch 63 is in this position, all of thewindings of the electro 'm'agnet are connected in'parallel.

With the described CQIlStIHCtlOIl, three variations in the-intensity ofthe magnet field can be secured, according as tliein-agnet windings areconnected in series, or partly in parallel, or wholly in parallel. Itwill of course be understood that if desired the switch board may bearranged for two varia tions, or for a greater number of variations,

the complexity of' the switch board con-' nections being diminished orincreased in proportlon to the number-of possible'varlations. Theintensity of the field is thus varied in correspondence with thecharacter of the material to be supported. Such variations haveheretofore been secured through the medium of a rheostat with contion ofa conveyer, an electromagnet above the conveyer, with its axis extendingsubstantially longitudinally thereof, and having pole pieces at itsrespective ends, an interposed rotary carrier of greater diameter thanthe width of the conveyer, and a set of auxiliary pole pieces mounted onthe carrier, said carrier pole pieces being arranged to travel in acircular path substantially parallel to the surface of the conveyer andinto and outof proximity to the pole pieces of the electromagnet, themain and auxiliary pole pieces being arranged with a plurality ofproximate faces.

3. In a magnetic separator, the combination of a conveyer, anelectromagnet above the conveyer, with its axis extending substantiallylongitudinally thereof, and having pole pieces at its respective ends,an interposed rotary carrier of greater diameter than the width of theconveyer, and a set of auxiliary pole pieces'mounted on the carrienfsaidcarrier pole pieces being arranged to travel in a circular pathsubstantially parallel to the surface of the conveyer and into and outof proximity to the pole pieces of the electromagnet, together with aplatform of magnetizable materialv pole piece when crossing theconveyer.

supporting the conveyer.

ft. In .a iagnetic separator, the combination of a conveyer, anelectromagnet above the conveyer, with its axis extending sub stantiallylongitudinally thereof, and having pole pieces at its respective ends,an interposed. rotary carrier of greater diameter than the width of theconveyer, and a set of auxiliary pole pieces mounted on thecarrier,-said carrier pole pieces being arranged to travel in a circularpath substantially par- 'allel to the surface of the conveyer and intoand out of proximity to the pole pieces of the electromagnet, togetherwith a platform of magnetizable material supporting the conveyer, andmeans for adjusting the platform toward and away from the carrier.

5. In a magnetic separator, the combination of a supporting frame, aplatform of magnetic material resiliently supported by said frame, anon-magnetic conveyer movably mounted on said platform, means forfeeding material to be separated to said conveyer, means for actuatingthe conveyer, a stationary magnet in proximity to the conveyer, acarrier interposed between the stationary magnet and the conveyer andextending laterally through a neutral zone at each side of the conveyer,and a series of auxiliary pole pieces mounted on said carrier.

ieces mounted upon the disk, and means or rotating said disk, saidauxiliary pole pieces being provided with upwardly projecting armsadapted to move in close proximity to the side faces of the pole piecesof the stationary magnet.

7. .In a magnetic separator, the combination of a stationary magnetprovided with extended pole pieces, a conveyer mounted upon a resilientsupport and extending underneath the respective pole pieces, a rigidrotary disk axially supported between the pole pieces and providedvwithan annular series of auxiliary pole pieces adapted to move ininteracting relation to the pole pieces of the stationary magnet, andmeans for rotating said disk.

8. In a magnetic separator, the combination of a conveyer, anelectromagnet above the conveyer, provided with pole pieces, a carrierextending across the conveyer and revolving in a plane substantiallyparallel thereto, and a set of auxiliary pole pieces mounted on thecarrier and each arranged totravel past each pole piece with a pluralityof its faces in proximate relation to such 9. In a magnetic separator,the combination of a conveyor, an electromagnet having main pole piecesof opposite ,polarity above the (conveyer, and an electrically isolatedplatform below the conveyer formed of material having efficient magneticconductivity and extending from a point approximately below one polepiece to a point approximately below the other, together with means foradjusting said platform and conveyer into greater'or less proximity tothe electromagnetic pole pieces, and a rotary member interposedbetweensaid pole pieces and the conveyer and provided with a set of auxiliarypole pieces in positions to be carried across the conveyer, in proximityto the respective main pole pieces.

10. In a magnetic separator, the combination of a conveyer,electromagnetic pole pieces of opposite polarity longitudinally alinedabove the conveyer, and a platform below the conveyer formed of materialhaving efficient magnetic conductivity and extending from a pointapproximately below one pole piece to a point approximately below theother, together with a rotary carrier interposed between said polepieces and the conveyer substantially in the plane of its upper surface,and provided with auxiliary pole pieces in positions to passsuccessively under opposite poles in opposite directions across theconveyor and over the respective ends of said platform.

11. In a magnetic separator, pairs of opposin'g stationary pole pieces,a conveyer extending between the pole pieces of each pair, a rotary diskaxially supported between the pole pieces and having its marginsextending beyond the conveyer on each side, an annular series ofauxiliary pole pieces mounted upon the disk and means for rotating saiddisk, said auxiliary pole pieces being provided with upwardly pro- Intestimony whereof We aflix our signa-.

tures in the presence of two witnesses.

ALVIN DINGS. MYRON DINGS.

Witnesses:

JAs. B. ERWIN, LEVERETT O. VHEELER.

